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What Outboards have you blown up?

Old 11-21-2020, 05:05 PM
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Default What Outboards have you blown up?

Since there are so many experts on here talking about their cousins, friends brother’s experience with blowing up a “Fill in the blank” outboard motor, I thought it would be interesting to hear from those that actually owned an outboard or three that they personally blew up. No friends, no family...Just a motor you owned personally. And when I say blew up, I mean seized pistons or hole in the block blew up. Year, Make and model and why. I’ll start:
1998 Evinrude FICHT. Have no idea why but I fried it.
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Old 11-21-2020, 05:07 PM
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Sorry forgot HP. 150
Old 11-21-2020, 05:15 PM
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1994 Yamaha salt water series 1 200 HP... twice. Rebuilt it after it blew up the first time because of a clogged oil line.. ran it for 35 hours ans blew it again! This time it jumped out of the water when the piston seized.
Old 11-21-2020, 05:18 PM
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Only one a 1985 Evinrude 150, VRO failed.
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Old 11-21-2020, 05:22 PM
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1999 merc 200 carb (twins)

went through 3 powerheads in 6 months all rods through blocks.
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Old 11-21-2020, 05:27 PM
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Not a relevant answer. But one I can't blow up is a 1992 150 johnson with over 4500 hours !!
Old 11-21-2020, 06:10 PM
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2000 Yamaha OX66 250HP. Haven’t opened it up to figure out why it failed but had oil, so ruling that out. Im guessing It had to do with O2 Sensor.
Old 11-21-2020, 06:15 PM
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F150 yamaha. Luckily that's it.
Old 11-21-2020, 06:29 PM
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1985 OMC Seadrive 115HP Had a ring stick in a port and snap. Was able to rebuild but ended up replacing the crankshaft as well because of a tech (or previous owner) who forgot to put an o-ring at the top of the driveshaft. Probably when replacing the water pump before I bought it. The spines were pretty well wasted away. I wasn't going to rebuild it like that.

On an interesting related story when I was in college and working at a marina. The in house mechanic saved someones 40 HP Evinrude by cutting off the splines and welding a socket to the bottom of the crank to engage the drive shaft. It was some very ingenuous jury rigging. His intention was to get the owner 1 more season out his motor. No idea how long it lasted. The mechanic was a talented guy who eventually opened his own shop and became a Tohatsu dealer. I watched/helped him do some crazy stuff. Stuff that I would never have thought of trying.
Old 11-21-2020, 06:32 PM
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Mercury 175 EFI flywheel sheared right off
Old 11-21-2020, 06:33 PM
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Ox 66 2000 and a 2002 mer efi with 12 hours. Oh and a 2001 optimax
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Old 11-21-2020, 06:39 PM
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2004 Opimax 150. Twins. Port motor gave up the Ghost at 225 hours due to bad injector. Power head replaced under warranty. Starboard motor did the same thing while breaking in the new power head on the port motor. Got it fixed and traded in a pair of Yamaha F150’s. That was 3,200 hours ago....Yamaha’s are still going strong.
Old 11-21-2020, 06:49 PM
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1996 Evinrude 175 hp OceanPro; VRO failed in 2000. Melted two pistons and destroyed block. Repowered with 175 hours Ficht.
2003 Honda 225, port engine of twins with about 1000 hours Stumbled on the way in from an offshore trip in 2015, puked emulsion of oil and water down the leg.. Autopsy showed internal corrosion led to catastrophic failure of left side of block and head. Sold starboard engine, parted out port engine, repowered with Suzuki 250s.

I have owned 25 outboards, and these are the only 2 that failed in spectacular fashion.
Old 11-21-2020, 06:57 PM
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1993 OMC V8 300. Had Monty rebuild all three of them and it took us 6 donors to get the right parts. Sold two and is redoing the last one for a cool little hot rod project.
Old 11-21-2020, 07:16 PM
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2005 Yamaha 200 hpdi.
Old 11-21-2020, 07:21 PM
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Johnson 250 looper, #1 cylinder. 2 mile west of skyway. 3 hour tow to Ruskin. Rebuilt powerhead, ran 300 more hours, replaced with 250G2, very happy with G2
Old 11-21-2020, 07:23 PM
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2000 Yamaha Saltwater Series II 250 that blew a hole in a piston at 20 hours. Came from the factory with a bad oil pump.

Also had a 4 hp 1982 Johnson dinghy motor that sent about 1/3rd of the engine flying when I pulled the starter cord. What a piece of crap that was. I think it ran about 20% of the time.
Old 11-21-2020, 07:35 PM
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In 50 years, None
Old 11-21-2020, 07:44 PM
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Between my dad and me 25 outboards

buccaneer, Johnson, evinrude , Scott atwater
West bend , martin , Elgin , Chrysler and mostly mercury, zero engine failure 😊
Old 11-21-2020, 08:20 PM
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1993 Johnson 88SPL. Threw a rod around 2008, a couple years into my ownership. I was inexperienced and lazy and didn't take care of it - didn't treat the fuel, let it sit, didn't property winterize. I knew it wasn't running right, about half power, but I kept running it for a few days anyway. Was messing with it on the muffs in the driveway after a ride, revved it up and it went pop. Put a hole in the block. Surely a blocked carb that starved the cylinder of lubrication.

Looking back, it's amazing that it ever ran at all the way I treated it.
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